3734725644 has 120 divisors (see below), whose sum is σ = 10540054448. Its totient is φ = 1146337920.

The previous prime is 3734725639. The next prime is 3734725649. The reversal of 3734725644 is 4465274373.

3734725644 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3734725639) and next prime (3734725649).

It is a self number, because there is not a number n which added to its sum of digits gives 3734725644.

It is not an unprimeable number, because it can be changed into a prime (3734725649) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2303154 + ... + 2304774.

Almost surely, 2^3734725644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3734725644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5270027224).

3734725644 is an abundant number, since it is smaller than the sum of its proper divisors (6805328804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3734725644 is a wasteful number, since it uses less digits than its factorization.

3734725644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2186 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 45.

The square root of 3734725644 is about 61112.4017201092. The cubic root of 3734725644 is about 1551.5040058469.

The spelling of 3734725644 in words is "three billion, seven hundred thirty-four million, seven hundred twenty-five thousand, six hundred forty-four".